National Science Foundation (U.S.), American Institute of Aeronautics and Astronautics, ebrary, Inc, Hazelrigg, G. A., & Reynolds, J. M. (1986). Opportunities for academic research in a low-gravity environment. American Institute of Aeronautics and Astronautics, Inc..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Science Foundation (U.S.), American Institute of Aeronautics and Astronautics, Inc ebrary, George A. Hazelrigg, و Joseph M. Reynolds. Opportunities for Academic Research in a Low-gravity Environment. New York, N.Y.: American Institute of Aeronautics and Astronautics, Inc., 1986.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Science Foundation (U.S.), et al. Opportunities for Academic Research in a Low-gravity Environment. American Institute of Aeronautics and Astronautics, Inc., 1986.